We have confirmed that Lenovo's upcoming Googlebook, codenamed "Sapphire," has been registered on the company's official website under the model number "Duet 13M9611."
Sapphire is an upcoming tablet-style Googlebook from Lenovo that is already known to be powered by the Kompanio Ultra 910 processor.
How the model number was discovered
This model number was uncovered by HelenTech, who successfully predicted Lenovo's naming convention based on another recently revealed Googlebook, "Ruby" (model GB 15IPH12). By applying Sapphire's known hardware specifications to this anticipated format, they were able to track down the exact listing.

What the "Duet 13M9611" moniker reveals about specs
While substantial information has already leaked, the "Duet 13M9611" designation gives us concrete details: it indicates that Sapphire will be an 11th-generation Duet series device featuring a 13-inch display and the MediaTek 8196 (Kompanio Ultra 910) chipset. Crucially, this definitively confirms earlier rumors that the device will adopt a tablet form factor.
For context, the current clamshell-style "Lenovo Chromebook Plus Gen 10" available in Japan, which also utilizes the Kompanio Ultra 910, carries the model number "14M9610."
Furthermore, it has been revealed that this device is categorized under the "Aluminium Premium" series, similar to the recently identified Ruby (GB 15IPH12). This suggests the hardware will be positioned within the top-tier "AL Premium" category of Aluminium OS, a classification previously spotted in Google job listings.
The bottom line
At this stage, highly specific technical specifications and benchmark scores remain unconfirmed. However, with the first wave of Googlebooks officially slated for a fall 2026 launch, current development timelines strongly suggest that "Sapphire"—now known as the Duet 13M9611—will be a key part of this initial lineup.